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/***************************************************************************
* Copyright (C) 2004-2006 by Albert Astals Cid <tsdgeos@terra.es> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
// qt/kde includes
#include <tqheader.h>
#include <tqvariant.h>
#include <klocale.h>
// local includes
#include "toc.h"
#include "core/link.h"
#include "core/page.h"
// uncomment following to enable a 2nd column showing the page referred
// by each tree entry note: PDF uses often references to viewports and
// they're slow when converted to page number. drop the 2nd column idea.
//#define TOC_ENABLE_PAGE_COLUMN
class TOCItem : public KListViewItem
{
public:
TOCItem( KListView *parent, TOCItem *after, const TQDomElement & e )
: KListViewItem( parent, after, e.tagName() ), m_element( e )
{
#ifdef TOC_ENABLE_PAGE_COLUMN
if ( e.hasAttribute( "Page" ) )
setText( 1, e.attribute( "Page" ) );
#endif
setMultiLinesEnabled(true);
}
TOCItem( KListViewItem *parent, TOCItem *after, const TQDomElement & e )
: KListViewItem( parent, after, e.tagName() ), m_element( e )
{
#ifdef TOC_ENABLE_PAGE_COLUMN
if ( e.hasAttribute( "Page" ) )
setText( 1, e.attribute( "Page" ) );
#endif
setMultiLinesEnabled(true);
}
const TQDomElement & element() const
{
return m_element;
}
private:
TQDomElement m_element;
};
TOC::TOC(TQWidget *parent, KPDFDocument *document) : KListView(parent), m_document(document)
{
addColumn( i18n("Topic") );
#ifdef TOC_ENABLE_PAGE_COLUMN
addColumn( i18n("Page") );
#else
header() -> hide();
#endif
setSorting(-1);
setRootIsDecorated(true);
// the next line causes bug:147233
// setResizeMode(AllColumns);
setAllColumnsShowFocus(true);
connect(this, TQT_SIGNAL(clicked(TQListViewItem *)), this, TQT_SLOT(slotExecuted(TQListViewItem *)));
connect(this, TQT_SIGNAL(returnPressed(TQListViewItem *)), this, TQT_SLOT(slotExecuted(TQListViewItem *)));
}
TOC::~TOC()
{
m_document->removeObserver( this );
}
uint TOC::observerId() const
{
return TOC_ID;
}
void TOC::notifySetup( const TQValueVector< KPDFPage * > & /*pages*/, bool documentChanged )
{
if ( !documentChanged )
return;
// clear contents
clear();
// request synopsis description (is a dom tree)
const DocumentSynopsis * syn = m_document->documentSynopsis();
// if not present, disable the contents tab
if ( !syn )
{
emit hasTOC( false );
return;
}
// else populate the listview and enable the tab
addChildren( *syn );
emit hasTOC( true );
}
void TOC::addChildren( const TQDomNode & parentNode, KListViewItem * parentItem )
{
// keep track of the current listViewItem
TOCItem * currentItem = 0;
TQDomNode n = parentNode.firstChild();
while( !n.isNull() )
{
// convert the node to an element (sure it is)
TQDomElement e = n.toElement();
// insert the entry as top level (listview parented) or 2nd+ level
if ( !parentItem )
currentItem = new TOCItem( this, currentItem, e );
else
currentItem = new TOCItem( parentItem, currentItem, e );
// descend recursively and advance to the next node
if ( e.hasChildNodes() )
addChildren( n, currentItem );
// open/keep close the item
bool isOpen = false;
if ( e.hasAttribute( "Open" ) )
isOpen = TQVariant( e.attribute( "Open" ) ).toBool();
currentItem->setOpen( isOpen );
n = n.nextSibling();
}
}
void TOC::slotExecuted( TQListViewItem *i )
{
TOCItem* tocItem = dynamic_cast<TOCItem*>( i );
// that filters clicks on [+] that for a strange reason don't seem to be TOCItem*
if (tocItem == NULL)
return;
const TQDomElement & e = tocItem->element();
TQString externalFileName = e.attribute( "ExternalFileName" );
if ( !externalFileName.isEmpty() )
{
KPDFLinkGoto link( externalFileName, getViewport( e ) );
m_document->processLink( &link );
}
else
{
m_document->setViewport( getViewport( e ), TOC_ID );
}
}
DocumentViewport TOC::getViewport( const TQDomElement &e ) const
{
if ( e.hasAttribute( "Viewport" ) )
{
// if the node has a viewport, set it
return DocumentViewport( e.attribute( "Viewport" ) );
}
else if ( e.hasAttribute( "ViewportName" ) )
{
// if the node references a viewport, get the reference and set it
const TQString & page = e.attribute( "ViewportName" );
const TQString & viewport = m_document->getMetaData( "NamedViewport", page );
if ( !viewport.isNull() )
return DocumentViewport( viewport );
}
return DocumentViewport();
}
#include "toc.moc"
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